Poor Freaking Service

I called RCS on August 19th to inquire about changing debit order details. I was told to sent through an email to [Email Removed] with a copy of my ID and Bank statement, which I did at 14:35. During the call I was informed that the changes will take effect within 48 hours. I discovered the next day (August 20th) that the email had bounced and called RCS again to inform them. I was then given a different email address [Email Removed] and forwarded my initial email to them at 11:33 on August 20th. Despite this, RCS went on to debit my old account even though my email clearly states that they should be debiting the new account as my August salary would be deposited there. Because of this freakin incompetence from RCS, the debit bounced and I was charged R115 by the bank, which I expect to be refunded on since this is not because I did not alert them of the changes in my banking details.